Ground calcium carbonate for rare earth separation and saponification and preparation method of ground calcium carbonate

A heavy calcium carbonate, saponification technology, applied in chemical instruments and methods, inorganic pigment treatment, dyeing physical treatment and other directions, can solve the problems of ion influence, prone to third phase, increased organic phase loss and other problems

Inactive Publication Date: 2018-08-17
SICHUAN SHIMIAN JUFENG POWDER
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the use of calcium carbonate in rare earth saponification has encountered many problems, including: the third phase is prone to appear at the interface between the organic phase and the aqueous

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ground calcium carbonate for rare earth separation and saponification and preparation method of ground calcium carbonate
  • Ground calcium carbonate for rare earth separation and saponification and preparation method of ground calcium carbonate
  • Ground calcium carbonate for rare earth separation and saponification and preparation method of ground calcium carbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The specific implementation of this embodiment is shown in Figure 1, the raw ore is high-purity marble, and the specific steps include:

[0033] (1) Raw ore crushing: Put the bulk ore body in a jaw crusher for primary crushing to obtain small pieces of ore, wash and remove impurities from the small pieces of ore, dry them and place them in a crusher for secondary crushing, and obtain a particle size of 2~3cm particles.

[0034] (2) Dry grinding: the ore particles obtained in step (1) are ground in a vertical mill to obtain heavy calcium carbonate with a diameter in the range of 2 to 100 μm.

[0035] (3) Classification: Use a vibrating sieve to sieve and classify the above-mentioned heavy calcium carbonate. The powder with a diameter of 2-60 μm enters the next step, and the powder with a diameter greater than 60 μm returns to the previous step for regrinding.

[0036] (4) Iron removal: Iron removal treatment is performed on the heavy calcium carbonate with a diameter of...

Embodiment 2

[0048] The specific implementation of this embodiment is shown in Figure 1, the raw ore is high-purity calcite, and the specific steps include:

[0049] (1) Raw ore crushing: Put the bulk ore body in the jaw crusher for primary crushing to obtain small pieces of ore, wash the small pieces of ore to remove impurities, dry them and place them in the crusher for secondary crushing, and obtain a particle size of 2~3cm particles.

[0050] (2) Dry grinding: the ore particles obtained in step (1) are ground in a vertical mill to obtain heavy calcium carbonate with a diameter in the range of 2 to 100 μm.

[0051](3) Classification: Use a vibrating sieve to sieve and classify the above-mentioned heavy calcium carbonate. The powder with a diameter of 2-60 μm enters the next step, and the powder with a diameter greater than 60 μm returns to the previous step for regrinding.

[0052] (4) Iron removal: Iron removal treatment is performed on the heavy calcium carbonate with a diameter of 2...

Embodiment 3

[0064] The specific implementation of this embodiment is shown in Figure 1, the raw ore is high-purity marble, and the specific steps include:

[0065] (1) Raw ore crushing: Put the bulk ore body in the jaw crusher for primary crushing to obtain small pieces of ore, wash the small pieces of ore to remove impurities, dry them and place them in the crusher for secondary crushing, and obtain a particle size of 2~3cm particles.

[0066] (2) Dry grinding: the ore particles obtained in step (1) are ground in a vertical mill to obtain heavy calcium carbonate with a diameter in the range of 2 to 100 μm.

[0067] (3) Classification: Use a vibrating sieve to sieve and classify the above-mentioned heavy calcium carbonate. The powder with a diameter of 2-60 μm enters the next step, and the powder with a diameter greater than 60 μm returns to the previous step for regrinding.

[0068] (4) Iron removal: Iron removal treatment is performed on the heavy calcium carbonate with a diameter of 2...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses ground calcium carbonate for rare earth separation and saponification and a preparation method of ground calcium carbonate. The ground calcium carbonate for rare earth separation and saponification is characterized in that the acid non-soluble substance content is smaller than or equal to 0.5%, the effective calcium content is larger than or equal to 98.5%, whiteness is larger than or equal to 95%, fineness range D97 is 2-20micron adjustable narrow particle size distribution, specific surface area is larger than or equal to 1.5m<2>/g, and an oil absorption value is smaller than or equal to 40mL/100g. The parpearation method of the ground calcium carbonate includes raw ore crushing, dry grinding, grading, deironing, wet grinding, drying, secondary grading, tertiary grading, secondary deironing and depolymerization. The ground calcium carbonate for rare earth separation and saponification has advantages of high purity, low silicon, low ferro-aluminum, ultra-fineness, large specific surface area and narrow particle size distribution, the problem of exceeding of ammonia nitrogen ion and sodium ion contents in wastewater can be solved while occurrence of a thirdphase at an organic phase and aqueous phase interface is effectively inhibited, organic phase loss is reduced, production cost is saved, rare earth separation efficiency can be improved, and requirement of a novel rare earth extraction process can be well met.

Description

technical field [0001] The invention relates to a heavy calcium carbonate for rare earth separation and saponification and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] At present, ammonia saponification or sodium saponification is commonly used in China for the extraction and separation of rare earths. The saponification wastewater produced by the ammonia saponification rare earth extraction and separation industry has the highest proportion in the rare earth extraction and separation industrial wastewater discharge, accounting for 60% to 70%. material resources, and caused great damage to ecology and the environment. The sodium soap method is to use sodium hydroxide instead of ammonia to saponify the acidic extractant. Although the sodium soap method has eliminated the pollution of ammonium chloride, it has produced sodium chloride pollution. It still does not fundamentally solve the problem of saponificati...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09C1/02C09C3/04
CPCC09C1/021C01P2004/61C01P2006/12C01P2006/19C01P2006/60C09C3/006C09C3/04C09C3/041
Inventor 李龙山黄云华李琰吉杨信强李静波包珊珊高阳李峻峰
Owner SICHUAN SHIMIAN JUFENG POWDER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap